I have had USB working in the past for data transfer, but can't work out how to use it now. USB Preferences does not appear in the Connected Devices menu. If I go straight from search to USB Preferences all options are greyed out. If I plug in a USB cable, the device tells me it is charging. USB-C Port is 'on' in Exploit protection. I guess I am missing or have accidentally turned off another USB master switch option somewhere; where is it?
Thanks.